Question about Cars & Trucks
Check engine light came on; checked at auto store and it indicated the #1 O2 sensor needs replacement. Which of the sensors is the #1, and how easy is it to replace?
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Posted on Jan 02, 2017
You may have more than 1, did he by any chance tell you which one, if more than one? Either way, you may have to jack it up & put on safety stands, or just reach down to exhaust manifold,but that depends on engine, which one etc. If you can give more info, we can help. It sticks out from your exhaust manifold, or pipe(s) looks similar to a spark plug and has wire(s) coming from it.
Posted on Jun 19, 2009
u don't need an obd tool for a caddy. you can read/clear it yourself using the dash controls. the traction control light probably won't clear until you fix the problem. usually it's a wheel sensor which involves changing the wheel hub. not a big job. you need to find out which one is bad and the 'puter should tell you that. here is a website i found that will tell you how to read/clear the codes as well as what those codes mean. this should be helpful.
Posted on Oct 07, 2009
An O2 sensor code is a tricky one. It could mean SEVERAL different things, and I know how bad it sucks to hear this, but your best bet is to take it in and have a diagnostic ran on it at either a dealer or a good mechanic shop with a computer they can hook up to it. I had an "O2" code come up a while back on another car I used to have, and literally spent weeks and hundreds of dollars trying to fix it, and never did. Finally out of desperation took it in, paid the $90, and they found the problem and fixed it in like 30 minutes. Something I would have never even thought of was causing it (can't remember off the top of my head). After that I stopped wating time and money on check engine lights. One comes on in my car, I take it to have it ran for free at and auto parts store just to make sure it's not a loose gas cap or something, just to get an idea of what I'm looking at, then go and make an appointment to have to hooked up to a diagnostic computer to track down the problem. Good luck, and hope this helps save you some time and money.
Posted on Apr 05, 2010
SOURCE: O2 sensor replacement
You'll find the sensors, they usually are found in pairs, located just before and just after the catalyctic converter, along the exhaust system. (Wear safety goggles to keep the dirt from getting in your eyes) With the car raised up on jack stands or on a hydraulic lift, (never use just a jack for support) look for the O2's, they look allot like spark plugs with a wire coming out of the visible end.Before ordering the parts, take a look and see what you need because with dual exhausts you may need as many as four and you might need to buy some anti-seize compound too but some sensors come pre-lubed, so wait 'til you see your parts prior to buying it. You may need your VIN to be certain you get the right parts. Sometimes, they can be hard to access and a special tool might be needed but if you are lucky an open end wrench will do the trick, keep this in mind when you locate yours on your car initially.The sensors come with a tip protector, leave it on until you are ready to install it and make sure not to contaminate the tip when inserting the tip in the opening. Also, be very careful to screw them in by hand, paying attention to the feel so as to avoid cross threading and then use the wrench to finish the job. With parts purchased, run the motor to heatup the exhaust manifold/pipes and git r dun, good luck. (Oh, almost forgot, mechanics gloves offer heat protection.)
Posted on Aug 24, 2012
Testimonial: "Thanks for your help charlie. changing that sensor wasn't too bad. Any good at a room lp fuse that keeps blowing immediately. I'm not sure exactly what is on that circuit. Been through a dozen fuses checking different things. But they keep popping right away. thanks again for your help. Robert"
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